PyTorch安装问题-使用Jupyter笔记本和Conda导航器找不到包

Question

我已经尝试使用PyTorch官方网站的安装代码来安装PyTorch。我在Conda navigator 上的Jupyter笔记本上本地运行它

conda install pytorch torchvision cudatoolkit=10.2 -c pytorch

我收到以下错误

PackagesNotFoundError: The following packages are not available from current channels:
- pytorch
- cudatoolkit=10.2
Current channels:
- https://conda.anaconda.org/pytorch/win-32
- https://conda.anaconda.org/pytorch/noarch
- https://repo.anaconda.com/pkgs/main/win-32
- https://repo.anaconda.com/pkgs/main/noarch
- https://repo.anaconda.com/pkgs/r/win-32
- https://repo.anaconda.com/pkgs/r/noarch
- https://repo.anaconda.com/pkgs/msys2/win-32
- https://repo.anaconda.com/pkgs/msys2/noarch
To search for alternate channels that may provide the conda package you're
looking for, navigate to
https://anaconda.org
and use the search bar at the top of the page.

该怎么办

Answer 1

TL；DR使用64位Anaconda

conda为一个平台和体系结构管理包。

看起来你安装了32位(x86(Win Anaconda版本，在这里：

- https://conda.anaconda.org/pytorch/win-32

你可以在该链接下查看该频道(https://conda.anaconda.org/pytorch/win-32)不包含任何pytorch包，此包也是如此：https://conda.anaconda.org/pytorch/noarch

如果您查看win64：https://conda.anaconda.org/pytorch/win-64它实际上包含CCD_ 4包。

因此，pytorch通道中没有pytorchx86包，此外，也不可能创建其他架构的环境，这意味着您需要安装64位Anaconda才能使用pytorch。